ABSTRACT
The slotted ALOHA multiple access scheme is a widely used random access protocol independently for its adequate working capability for distributed wireless nodes having bursty traffic. The slotted ALOHA is also used as a part of different multiple access protocols especially for the control channels in many new wireless technologies. The effects of attacking noise packet signals on the slotted ALOHA scheme have been investigated by many researchers. The stability of slotted ALOHA can be enhanced by limiting retransmission trials in ad hoc networks. The chapter describes the system model and assumptions and details the security improvement analysis using multiple channels. Limiting the number of retransmission trials to improve the security of slotted ALOHA system in the presence of random packet destruction denial of service (DoS) attacking signal is presented. The chapter shows the security improvements of slotted ALOHA system by new packet rejection.
